Group items tagged

Weight loss is a $40 billion dollar a year industry. Advertisers lure us with images of a healthy and happy life spent running along the beach with the sun shining overhead, then heading home to eat our grapefruit and take our diet supplement.

Getty Images As a clinical psychologist and sleep researcher at Northwestern University's Feinberg School of Medicine, Kelly Glazer Baron frequently heard complaints from aggrieved patients about exercise. They would work out, they told her, sometimes to the point of exhaustion, but they would not sleep better that night.